The system required troubleshooting following the cleanup process.
The system required troubleshooting following the cleanup process.
Please be aware of my current machine details:
Processor: Intel Core 2 Duo E4600 2.40GHz/2M/800
RAM: 2*2 GB (4GB) DDR3
Hard Drive: 320 GB Samsung
Chipset: Intel Q45/Q43 Express Chipset
Operating System: Windows 7 Professional 32-bit SP1
Last time I powered on after cleaning dust (following my 6–8 month maintenance plan), the system didn’t show anything and emitted short beeps 4 times with both fans running at full speed. After shutting it down with a long press of the power button, it would start again. However, when I tried multiple times, the same issue occurred—both fans kept spinning fast, but the System serial number in BIOS remained empty.
I need a quick and effective solution soon.
I just used an electric air blower and a soft brush to clean the fans (Processor & System). No debris was removed since it was just a routine maintenance check, not to detect faults. However, after cleaning, I encountered problems later. I looked up online before posting this thread, thinking it might be related to RAM, but my RAM tests on a neighbor's computer work fine. I didn't realize that plugging the computer in causes fans to run at full speed one time, then start beeping as described earlier. As a student, I'm currently having all my assignments paused.
The Lenovo website mentions that examining the YouTube videos on Lenovo beep codes can assist in pinpointing the issue.
As mentioned before, it relates to RAM problems, but I check it using my neighbor's machine which functions properly. I was very concerned that if the computer operates normally with the fans running at maximum speed, it might cause issues on the other side where it would begin beeping.
Just starting your RAM in another device doesn’t guarantee it’s working perfectly. Whenever possible, try booting up your friend’s system using MemTest86 or MemTest86+ via USB and perform a full cycle on the RAM. This process might take one to two hours.
If your motherboard supports four DIMM slots, attempt installing the memory in the remaining pair of sockets. Inspect the metal contacts within the DIMM slots for any bending—this is rare since you didn’t remove the RAM during cleaning.
Memory issues could also stem from a defective memory controller on the CPU. You might consider installing RAM from your friend’s machine if they’re willing to take the chance.
Second-hand 2GB DDR3 DIMMs are often available on eBay for a few dollars. It’s even better to purchase a couple of 4GB units.
If you have access to a local repair shop, they may offer free DDR3 DIMMs. I’ve collected boxes full of outdated memory—though it’s mostly useless, it’s useful for testing and repairs.
Also, verify the CMOS battery (CR2032). You might have disturbed it while cleaning or clearing the BIOS. Using a voltmeter, check the voltage; if it drops below 2.5V, replace the battery.
Sorry for the delayed response! I verified using the method you mentioned about the RAM being fine, and I also checked my system with my neighbor's RAM—it worked the same way the issue required fixing. I replaced the old CMOS battery with a new one, but it didn't work.